tech.cornell.edu - robtex.com
tech.cornell.edu
cornell.edu
| DNSSEC | ⚠️ Not signed | ||||||
| A | 128.253.173.241🇺🇸 CORNELL-AS128.253.0.0/16 Cornell University Network Engineering Rhodes Hall, 757 136 Hoy Road Ithaca, NY 14853 | ||||||
| A | 128.253.173.242🇺🇸 CORNELL-AS128.253.0.0/16 Cornell University Network Engineering Rhodes Hall, 757 136 Hoy Road Ithaca, NY 14853 | ||||||
| A | 128.253.173.243🇺🇸 CORNELL-AS128.253.0.0/16 Cornell University Network Engineering Rhodes Hall, 757 136 Hoy Road Ithaca, NY 14853 | ||||||
| A | 128.253.173.244🇺🇸 CORNELL-AS128.253.0.0/16 Cornell University Network Engineering Rhodes Hall, 757 136 Hoy Road Ithaca, NY 14853 | ||||||
| A | 128.253.173.245🇺🇸 CORNELL-AS128.253.0.0/16 Cornell University Network Engineering Rhodes Hall, 757 136 Hoy Road Ithaca, NY 14853 | ||||||
| A | 128.253.173.246🇺🇸 CORNELL-AS128.253.0.0/16 Cornell University Network Engineering Rhodes Hall, 757 136 Hoy Road Ithaca, NY 14853 | ||||||
| NS | dns.cit.cornell.edu ⭐ | ||||||
| NS | bigred.cit.cornell.edu | ||||||
| NS | cudns.cit.cornell.edu | ||||||
| NS | drdns.cit.cornell.edu | ||||||
| NS | drdns2.cit.cornell.edu | ||||||
| MX | cornell-edu.mail.protection.outlook.com ⭐ | ||||||
| TXT | apple-domain-verification=R62yGBLwZW9fUKsm | ||||||
| TXT | NmwZsJfvHf2DUPwvPqMaLkflPi89l0leQfEkMtPmpxQNqlkPy0anm5LZM/N+sxrW+oJfdGKCyoi/q... | ||||||
| TXT | Y29ybmVsbA== | ||||||
| TXT | sending_domain44232=26593424e3f9a029c8413a3f66844938dd909eec6d3c1421168e0fa97... | ||||||
| TXT | adobe-idp-site-verification=f41c9778dd61e0b903e5daff9095300a03eb9ad4a2a7ce435... | ||||||
| TXT | google-site-verification=Gh3jhxuBIdlsH1dgfvJhSGS30sk0OFFvel_I9xQkI5c | ||||||
| TXT | autodesk-domain-verification=9Y0MrpeHy7LiqjUs0Rpy | ||||||
| TXT | google-site-verification=V6u6xIMwPwKv6d55ZV4VqbkO1mjLlzyvQKkbz4usOM0 | ||||||
| TXT | facebook-domain-verification=kiwj4xtbf69jsywfq4nlu7a0z81doz | ||||||
| TXT | v=spf1 ip4:128.253.150.144/30 ip4:128.253.150.158 ip4:128.253.150.176 ip4:128... | ||||||
| TXT | google-site-verification=CauHX8dfnPle2exSgs6k3OuJ_rPzkV1d6n6E9OFJFO8 | ||||||
| TXT | 7OT7JRZVY1IKZ8J8U84AK2JX4T0J2BM42TL8LSZLV | ||||||
| SOA | dns.cit.cornell.edunsmaster@cornell.edu serial=3605160902 | ||||||
rank #215 globally
rank #5 in the tld
This domain name is associated with Cornell University, an Ivy League research university located in Ithaca, New York. The ".edu" extension signifies that the domain is used for educational institutions, specifically colleges and universities. The Cornell.edu domain is used for the university's website, where one can find information about their programs, research, faculty, and more.Semrush Rank:#214 Keywords:3,858,314 Traffic:12,245,925/mo
WOT: SAFE (95/100)
📈 Tranco rank: #586
Cornell University
Cornell University is a private Ivy League research university founded in 1865 by Ezra Cornell and Andrew (0x4469636b)son White. Guided by its founding vision that "any person can find instruction in any study," Cornell has grown into one of the world's leading academic institutions. The university is headquartered in Ithaca, New York, with an additional campus in New York City (Cornell Tech on Roosevelt Island).
Academic Profile
- Classification: Private Ivy League research university and New York's land-grant institution
- Student Body: Approximately 25,000+ students across all campuses
- Colleges: Multiple schools including Engineering (recently renamed David A. Duffield College of Engineering), Arts & Sciences, Agriculture, Business, Law, and Medicine
- Research Focus: Environmental sustainability, agricultural advancement, AI in healthcare, and maritime technology
DNS Infrastructure
Cornell operates its own authoritative DNS infrastructure under the Cornell Information Technologies (CIT) department:
| Service | Details | |
|---|---|---|
| Nameservers | bigred.cit.cornell.edu,cudns.cit.cornell.edu,dns.cit.cornell.edu, plus cloud-hosted DR servers on Microsoft Azure and AWS | |
Microsoft 365 (cornell-edu.mail.protection.outlook.com) | ||
| Web Hosting | Six redundant IPs (128.253.173.241-246) on Cornell's own AS (CORNELL-AS) | |
| DNSSEC | Not enabled (unsigned zone) |
The university maintains over 100 subdomains serving various departments, research centers, and administrative functions.
Subdomains
ddl46.tech.cornell.edu |
tata-446-dtengo.tech.cornell.edu |
Same first word
Similar names
DNS History
9 records (2 active, 7 former)
○MXrouter1.mail.cornell.edu2017-02-08 → 2017-02-08 · 3 obs
○ 2026-03-08 09:51:50
○ 2026-05-16 13:22:16
○MXrouter10.mail.cornell.edu2017-02-08 → 2017-02-08 · 3 obs
○ 2026-03-08 09:51:50
○ 2026-05-16 13:22:16
○MXrouter2.mail.cornell.edu2017-02-08 → 2017-02-08 · 3 obs
○ 2026-03-08 09:51:50
○ 2026-05-16 13:22:16
○MXrouter3.mail.cornell.edu2017-02-08 → 2017-02-08 · 3 obs
○ 2026-03-08 09:51:50
○ 2026-05-16 13:22:16
○MXrouter4.mail.cornell.edu2017-02-08 → 2017-02-08 · 3 obs
○ 2026-03-08 09:51:50
○ 2026-05-16 13:22:16
○MXrouter9.mail.cornell.edu2017-02-08 → 2017-02-08 · 3 obs
○ 2026-03-08 09:51:50
○ 2026-05-16 13:22:16
●MXtech-cornell-edu.mail.protection.outlook.com2026-03-08 → 2026-05-16 · 3 obs
● 2026-03-08 09:51:50
● 2026-05-16 13:22:16
●A23.185.0.22026-03-08 → 2026-05-16 · 3 obs
● 2026-03-08 09:51:50
● 2026-05-16 13:22:16
○A54.164.131.652017-02-08 → 2017-02-08 · 3 obs
○ 2026-03-08 09:51:50
○ 2026-05-16 13:22:16
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| edu | a.edu-servers.net, b.edu-servers.net, c.edu-servers.net, d.edu-servers.net... | - |
| cornell.edu | bigred.cit.cornell.edu, cudns.cit.cornell.edu, dns.cit.cornell.edu, drdns.cit.cornell.edu... | 5 records |
✅ Authoritative Response
Server:52.152.185.125
NS records: bigred.cit.cornell.edu, cudns.cit.cornell.edu, dns.cit.cornell.edu, drdns.cit.cornell.edu, drdns2.cit.cornell.edu
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for cornell.edu (unsigned zone)
⏱️ Timing
Total: 125ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 23.185.0.2 |
| MX | 1 | tech-cornell-edu.mail.protection.outlook |
| TXT | 5 | v=spf1 ip4:128.84.13.240/28 ip4:128.253., apple-domain-verification=U65EY3kjNgiUYG... |
📌 Glue Records Collected
Total: 5
In-bailiwick: 5 (bigred.cit.cornell.edu, cudns.cit.cornell.edu, dns.cit.cornell.edu...)
Analysis
Hierarchy
tech.cornell.edu is a parent of ddl46.tech.cornell.edu and tata-446-dtengo.tech.cornell.edu.
IP Addresses
tech.cornell.edu maps to IP address 23.185.0.2.
Other host names, for instance www.cme.ucla.edu, staceydavid.com, ppponline.org, education.edu and tcatknoxville.edu share IP numbers with tech.cornell.edu.
Mail Servers
tech.cornell.edu is handled by a single mail server, tech-cornell-edu.mail.protection.outlook.com.
tech-cornell-edu.mail.protection.outlook.com points to eight IP numbers: 2a01:111:f403:f902::2, 2a01:111:f403:f90a::1, 2a01:111:f403:f90d::, 2a01:111:f403:f913::1, 52.101.10.18, 52.101.41.58, 52.101.41.180 and 52.101.194.13.